کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6471700 1424122 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the theory of the generalized Gerischer impedance for an electrode with modeling roughness
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
On the theory of the generalized Gerischer impedance for an electrode with modeling roughness
چکیده انگلیسی


- We investigate peculiarities of Gerischer impedance behavior of a rough electrode.
- We derive expression for the roughness function and establish its limiting behavior.
- Roughness influences parameters extracted from low-frequency region of impedance.
- Gerischer impedance exhibits frequency dispersion at medium frequencies.

The generalized Gerischer impedance theoretical model for a sinusoidal-shaped electrode has been developed. The impedance is presented as an expansion by the small parameter, which is equal to the ratio of the amplitude to period length of surface roughness. For the case of a weak roughness, we have derived the general expression for the complex roughness function and established its limiting behavior. It is shown that roughness does influence the value of parameters extracted from low − frequency region of an impedance measurement. In anomalous intermediate − frequency region, impedance exhibits frequency dispersion which is caused by the roughness. At high frequencies, the Gerischer impedance acts like the Warburg impedance

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 235, 1 May 2017, Pages 583-594
نویسندگان
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